Magnified imaging based on non-Hermitian nonlocal cylindrical metasurfaces

Aberration-Free Imaging Based on Parity-Time Symmetric Nonlocal Metasurfaces

Aberration-Free Imaging Based on Parity-Time Symmetric Nonlocal Metasurfaces Francesco Monticone1*, Constantinos A. Valagiannopoulos1,2*, and Andrea Alù1,3+ 1Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA 2Department of Radio Science and Engineering, Aalto University, Finland 3FOM Institute AMOLF, Amsterdam, The Netherlands +alu@mail....

A Relaxation Method for Nonlocal and Non-Hermitian Operators

inger equation (TDSE). It uses the Crank–Nicholson scheme to propthen solving the resulting eigenproblem by expanding on agate the wavefunction forward in time and finite differences to some basis set. Examples of such techniques are the colloapproximate the derivative operators. The resulting sparse linear cation and Galerkin methods implemented via piecewise system is solved by the symmetric ...

Magnified time-domain ghost imaging

Parity-Time Symmetric Nonlocal Metasurfaces: All-Angle Negative Refraction and Volumetric Imaging

Francesco Monticone, Constantinos A. Valagiannopoulos, and Andrea Alù Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712, USA Department of Physics, School of Science and Technology, Nazarbayev University, KZ-010000 Astana, Kazakhstan Center for Nanophotonics, FOM Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterd...

Parity-time symmetric nonlocal metasurfaces: Focusing and imaging through balanced loss and gain

Light focusing and imaging represent some of the oldest applications of optics. Despite centuries of developments, however, conventional optical systems still suffer from aberrations of different types and are limited to plane-to-plane imaging, issues that are inherent to the conventional laws of reflection and refraction [1]. Metamaterials and metasurfaces have offered a route to partially ove...